Pressure-controlling device.



P. A. MYERS. PRESSURE CONTHULLIKNG DEVICE.

APPLICATIN FILED NINE 5,'1916.

" Patented Feb. 27, 1917'.v

vide improved means for applying the con- Itrolling spring to the operating mechanism,

` f action of the connecting rod.

In the accdmpzrnying driwing, the figureY 'comprises a base 1 upon which -is mounted e UNITED sfrn'rns yPAtncNrr omen.

PHILIP A. MYERS, OFI,ASHLAND, OHIO, ASSIGNORTO F. E. MYERS ANDBROTHEHR, A COPARTNERSHIP CONSISTING 0F FRANCIS E. MYERS AND E'HILIP A. MYERS, OI

ASHLANYD, OHIO.

Original application filed September 18,

To all whom 'it may eminem:

'Be .it known that l, PHILIP A. Menus, u citizen of -the United States, residlng et Ashland, in the county of Ashlandv and Stute ous mechanisms but more particularly de-.

signed-for use with spray pumps, or the like, in which it is desired to interrupt the operation of the pumping insti'irmentelities when the resistance to the movement o the piston hns become abnormal, without interl yruptingthe upplimition of power to the 'op erating devices.y Pumps of this'kind have been heretofore designed but tor the most `part they have not-been of :L satisfactory vconstruction or operntion.

' plication constitutes u division o the appli- The ,c resent npcu'tion ilcd'by me Sept. 18th 1915, Ser.

51,298, which has been issuer vas Patent No.

1,191,453, dated July 18th, 1916.

The', object of the-present invention'is to provide u pump otthis type in which the controlling mechanism Will-be of avery simple und of :i highly practical character, thus not only cheapcning the construction ofthe pump but also renderingzit more certain .in its operation und less liable to get out of order or to fail to operate. To .this end, it is u further object of the invention to pros and to so arrange the mechanism that a short spring supported solely by the connecting rodninyl be utilized to yieldehly-control the is a. side elevation, pertlyin section, of on embodiment of the invention. p

In the embodiment here shown the pump cylinder or cylinders 2. Mounted in each cylinder is n4 piston 3 'which serves to draw ',the fluid in through the inlet pipe lend to ir chamber j force the sume out through an 5 and discharge pipe (i.V This dischnrge ipe Vis usually connectedwith a tank 1n w lch the fluid is stored under stir pressure and to which are connected the hose andnoz'zle, or

specification n: Letters raient.

1915, seria; No.' 51.298. 191e. seria1N0.1o1`,s12.

PRESSRE-JCONTROLLING DEVICE.

Patented Feb. 27, 1917. Divided and thisappliction lcd June 5,

other distributing devices. This tank is constructed to withstand a certainpredetermined pressure andto uvoidinjury to the tank and possible injury to the operator it is essential that the pressure should not rise materially above the predetermined amount.

Relief 'valves are 'commonly used to control this pressure but their operation is unsatisfactory, principally because ofthe corrosion due to the character of the spraying fluids.

The operating mechanism for' the pump may be of various ykinds,'but preferably com .prises a crank shaft 7A journeled in uprights 8 carried by the base 1, and driven by Ineens of gearing 9 and 10 from alshnft 11 to whichv poi-ver may be applied eitherV b u, belt or in# any .other 'suitable manner. o controll the movement of the movable part of the mecha.- nism l have interposed between the samennd another part of the apparatus a two part connecting rod or-togglc, thctwo parts of which are held normally against' relative iovcment by n spring. VIn the present e'mbodiment of the invention the toggle serves4 to transmit power from the shaftto Athe piston und to this end a. toggle is interposed between the crank shaft und each piston.

The two members of cach toggle 4or. connect-' ing rod, ns shown et 12 und 13,ure pivotally connected one to the other, nt 14, and, at those ends remote from the-axis of said connection, :ire pivotally connected respectively to the crank shaft and to the'lpiston 3, as shown et '15 and 1G. The movementl of the two members of the connecting rod about their intermediate .axis 14;by which they are connected one to the other, areso controlled that this axis cannot move into alinement with the axes, 15 :1nd 16, of the connections between the ends ofthe rod and the piston und crank shaft, respectively. The movement of this intermediute axis` toward n line extending througlrthenxes 15 and, 16 'of the rod is limited by coperuting parts of the two members of the rod. one member, 13, has :t projection or lug 17 extending beyond the exis 14; sind arranged to engage n part orv lug 18 carried by the other member, 12, of therrod when the two partsA of the rod are moved toward aline-` ment, theerrnngcment of Avthe parts'l'? and 18 being such that the axis14 cannot be As here shown,r

. EUA-17,383..

...the part 18, is providedwitha cushion,sucliA two, membersV iv 6ta-l1 con'n on wit 'as a' block of leather, to.dead en the-sound thepl'lhe'r,imt'llf secureitaetdits eildetld and to absorb thel shock due to the contact the'parts tit-Said rod and' adapted to travel of these parts. with Saidmlqdfand to vact thereon to -hold the 5 Each I nemberlof theconnectingrod 1s protwo .In g f thereof against relative move 70 vided with an .arm 19 extending outwardly ment '-.diirihgfthe'fnnormal operation of Said some distance-therefrom yaxidi'aia expansion pumpand to permit saidmembers toihave ,spring 2O secured` at its en'ds to the respecfreiati've. movementwhe-abnormal resistance tive arms through the. instr-umentalit' 4of .the is offered to the movement of saidY piston, lo .a -1]usmng plvoted portions 21 wh1charel InxaJpum'p combination, with a pis- 'i5 pivoted to the ends of the arins i9 at 22.; It ton and fit-Gaul( shaft, .of a 'two part con. `willbe obvious that as, the two members .0f I'Odn'il-ltlposd .between Bald Pini/0n the rod are mo. ed about `the axis 14 the ends 'and $3.151 Shaft, the tw art rod 'having its ofthe arms 19 will be moved away from or ends ivotallyconnec respectively with 15 toward each other, in the one instance, thel Said-'Sh movement being accomplished against the two members pivotal y'connected one with tension' of the spring, and in the other in- -theother Onhl'lil axi'sf'arranged between'but stance being caused-by the contraction of vout of alinement wit the xesof. the first- 'the spring. In otherwords the spring 2O mentioned coltectionggand lan expansion :o tends to resist the movementk of the inter! .Spring Secured@ both-members of said con- 85 .mediate axis away from the line extendin 'neCti-ng lOd and acting thereon tol holdsaid 'throughthe axes 15 and 16, the strength o members against relatlve, movement during this spring being such that it will prevent the n ormal operation of said pump and to my movement f either member ofthe rod y permlt'said members to' have relative mover u about the axis 14 so long as the resistance to ment ,When bnOIlnal resistance iS Offered t0 90 the movement of the piston does not become "the InOW/nlfni'I 0f Said PSOIL l bnormal, that is, the, pressure in the tank 3 In n PillnP, the Combination With u do@ M exceed a redetermined amount, piston and a crank shaft, of 'a two art con- The operation op the device will be Ireadily nectlng rod inter osed. between said piston lo understood from the foregoing description and said shaft, t e two. part rod having its 95 and it will be apparent that I have provided ends plvotelly 'connected .respectively .with n 'controlling mechanism which is .very Said shaft and said piston and having its simple in its construction,'which is certain in tWO members PIVOtllly Connected 0ne With its rationand which is of a ver strong, the other 0n Aan XlS arranged between but durhle character. Further, it wi l be a out of alinement with the axes of the first- .loo purent that the-device' is readily adjustab e mentioned connections, one .member-'of said to cause the same to yield at dierent pres-4 rod having a part extending beyond said inlures; and further, thatthe device comprises termediate axisand arranged to engage a very few parts; and that the character and part carried by the other member 0f Said 40 arrangement' of. these palts are such .that rod to limit the movement 0.1"' Said interme. 105

' they will not readily get out of order or lock diste axis toward a line extending through or bind in such'a manner as to interfere with the two firsbmentioned -axes,`and' a Spring or prevent the operation `of the mechanism secured at each end to the two members of in the rescribcd manner. said rod and tendingtomove said Ainternflel 45 Vhi e thtl invention was primarily dediate axis toward said line. 110 signed for, and has been illustrated as ap- 4. In a pum ,the combination, with a pig, p led to, a spray pump, it will be apparent ton anda cran shaft, of a tw'opa-rt connectthat it can -be a :plied to pum of other ing rod ntcriwsed between siidrpiston and kinds or to mec mism other t a um )s said shaft, tbetwo part rod having itsends l0 where the operatiim is similar 'untlie econnected respectively with said shaftand 115 vicewould be useful, and further, it will be. said piston and having its two members con-l understmxl that the crmstrnq-thmshown `and nected one with the lother on en axis ardescribed has been chosen for'the pdr )ose of ranged between but out of alinement with illustration only and that I do not wisli to be' the axis of the firstmentioned'connections, 5.5 A limited thereto, as obvious mfnlifications will thc two nnmbersfof.` Sail] rod having parts' 120 occurto n person skilled in the art. adapted for connection with the respective Hav'i thus fullydescnibedmy invention, ends of n springend arranged to be moved4 wint I 'rzllaim as newY desireto secure by toward or away from each other-when said Patent, is:-'-`A g A meml'rcrs are moved about said inteixriediate l0 vl. InapumpJhe coinhinatiomwith apisaxis, and un' expansion spring connected to 125 tan anda crank shaft, of a two part. cony said4 arts of said members. neeting rod 'interposed between ,said piston 5. y n 's device of the character described *i i ma shan, the two )m rmi-having as ingewonnen-with a ari-ving memitr mi erliss Apivotally connec respectively with a drivenl member, of 'a' two part connecting 0 5. said .shaft and said .piston end-having its v' rodhaving' 'itlpiv'otllly connected-13.0

aft' and said piston and having its so l parts of'said rod ,when ahnor'alresistnce 'l is offered tothe movem r 4arms mounted on thev r one to Athe other and its ends pivotally con-i nected respectively l,vvtliisaid driving member jand sid'driven member, means to hold j the axis on which the two parts of said rod are connected one to the other oiit of alinement with the axes of the-ends of said iod,

4and a -sprin having its ends secured to the two 'parts'o -fsaidrod' and tendin to :resist the movement 4of the two parts o said rod about theaxiaonwhich'l they are connected o iie to the other.

6. In a devicetof the character described, the combination, Y'with a driving member and a driven member, of a two part connecting..

necting4 rod interposed-,between said piston and said4 crank shagftyiiidansgcarriedby said rod forl holdingfthejA two'paifts of thesamenormally in their extendedpositionfand for,

permitting the' relative movement of Vthe two said means comprising and-ji.- curedat its end s to the'eifds of sai arms.V

- said intermediate axis lan Asaid pistli'f- OffI gating s Img Se* 8. In a mechanism of the character de scribed, a movable member, a controlling device for Said movable member comprising a toggle having one end pivotally connected with said movable member and having its` other end pivotally connected with another Vpart of said mechanism, the members of said toggle having parts cooperating to prevent the intermediate axis of said toggle from being moved into aIinement with the axes at the 'ends-ot said'toggle, the respective members of` said toggle being provided with arms, and a spring having 4its ends attached to the ends of the arms and acting to hold fthe parts of said toggle norniallyr'in engage ment.

9. In u mcchanism of' the character de- 'I scribed, a movable member, a controlling device'for said movable member Ccomprising -a toggle having one end pivotally connected with said movableniember and having its other end pivotally connected with another part of said mechanism, one member of said toggle having a stop near the intermediate' axis' of the-saine and the other member of saidtoggle having a part irojectingbeyond gage the stop and prevent ,said intermediate4 4axis from being moved into` alinement vwith the axes at thefends of said toggle, and an expansion spring secured at its ends to the respective men'ibers of the toggle and acting to hold said projection 4and said stop nor mally vinengagement. l In testimony whereof, Ialiix my signature.

PHILIP A. MYERS.

arranged to eli# sii 

